1. make sure the TV is ON (powered) and connected BEFORE you power up your PI
- this is because the PI asks the TV what resolutions it supports as part of booting.... this is called EDID data.
2. you can check to see if your TV is sending EDID data by powering off your PI, remove the SD card, power up.
you should see a display similar to this. Note the "display" line reports the EDID data.
if you see "none" for EDID, your TV is not providing the desired data.
note: if you are using an adapter, it likely is the problem, as most do not pass data both directions
3. there is a way to override. It's NOT in config.txt
in /boot/cmdline.txt (add to the front/end of the line, NOT a new line)
-- IMPORTANT NOTE: for Bookworm, the file is at /boot/firmware/cmdline.txt !!
video=HDMI-A-1:1024x768@60D
(or whatever resolution you want)
above is 1024 x 768 at 60Hz. Digital (HDMI)
be prepared for garbage if your TV does not support the set resolution....
- this is because the PI asks the TV what resolutions it supports as part of booting.... this is called EDID data.
2. you can check to see if your TV is sending EDID data by powering off your PI, remove the SD card, power up.
you should see a display similar to this. Note the "display" line reports the EDID data.
note: if you are using an adapter, it likely is the problem, as most do not pass data both directions
3. there is a way to override. It's NOT in config.txt
in /boot/cmdline.txt (add to the front/end of the line, NOT a new line)
-- IMPORTANT NOTE: for Bookworm, the file is at /boot/firmware/cmdline.txt !!
video=HDMI-A-1:1024x768@60D
(or whatever resolution you want)
above is 1024 x 768 at 60Hz. Digital (HDMI)
be prepared for garbage if your TV does not support the set resolution....
Statistics: Posted by terribleted — Mon Aug 26, 2024 7:42 pm